It really all is about the light, isn't it?
I've stood at Oxbow Bend on dozens and dozens of different mornings and marveled at how the light can change the scene so magically.
This particular morning was really special - the low hanging clouds, the burst of light as it broke through, and the way the whole scene seemed to create a feeling of serenity for the few of us there at the moment.
It's really not about the camera body or the lens or the f/stop.
It's about the light.